RU2466796C1 - Hydrocyclone three-product sizer - Google Patents

Abstract

FIELD: mining.

SUBSTANCE: proposed sizer comprises sizing chambers arranged one above the other and furnished with accumulation compartments, fractions discharge branch pipes and water feed system. Hydrocyclone sizing section of bottom sizing chamber have pump feed branch pipe inlets arranged opposed and shifted vertically. Pulp is fed tangentially in one direction. Top classifying chamber is provided with replaceable nozzle arranged on silt discharge branch pipe and slime separation guide arranged at an angle to slime separation branch pipe. Hydrocyclone sizing section is provided with conical reflection guide. Heavy fraction accumulation compartment walls feature reverse inclination and are connected with conical reflection guide. Heavy fraction accumulation compartment bottom is inclined to heavy fraction discharge branch pipe.

EFFECT: higher efficiency of separating high-clayey sands of placers with minor and fine gold particles.

1 dwg

Description

The invention relates to the classification and disintegration of fine and fine particles of high clay sands of placer and complex gold-bearing deposits of natural and man-made types.

Known hydraulic classifier for the separation of crushed material in an upward stream of carrier fluid, containing a separation tube with a pulsator and a reflector [1].

The classifier does not provide separation into more than two fractions.

Known step classifier-hub, comprising a housing with a stepped bottom, divided into sections, discharge funnels and receiving tanks [2].

This classifier does not provide additional disintegration of high clay sands, because the process in its main part proceeds in a laminar flow.

The closest in terms of its function is a three-product hydraulic classifier containing classification chambers installed one above the other, equipped with storage compartments, branch pipes for the separation of the separated fractions and an additional water supply system [3].

The separation of fractions in this classifier occurs in a mode in which the disintegrating effect is sufficiently weakened.

The technical result is an increase in the efficiency of separation, classification and disintegration of high clay sands of placers with fine and fine particles of gold.

The technical result is achieved by the fact that in the hydrocyclonic three-product classifier containing classification chambers installed one above the other, equipped with storage compartments, branch pipes for the separation of the separated fractions, and a water supply system, in the section of the hydrocyclonic fractionation of the lower classification chamber, the inlet openings of the pulp supply pipes are located on opposite sides and with displacement in the vertical plane, while the pulp supply is provided tangentially in one direction, and the top The classification chamber is equipped with a funnel-forming surface mounted on the sludge outlet pipe and a sludge separation guide installed at an angle to the sludge separation pipe, while the hydrocyclonic fractionation section is equipped with a conical reflector-guide, and the walls of the heavy fraction storage compartment in the upper part are made with a reverse inclination and are conjugated with a conical reflector-guide, while the bottom of the accumulation section of the heavy fraction is installed at an angle to the branch pipe of the removal of the heavy fraction tion.

The combination of new significant features allows us to solve a new technical problem - increasing the efficiency of separation, classification and disintegration of high clay sands of placers with small and thin particles of gold.

The hydrocyclonic three-product classifier is shown in the drawing.

Figure 1 - General view of the classifier of hydrocyclonic three-product.

The three-hydrocyclonic classifier contains classification chambers 1, 2, installed one above the other, equipped with accumulation compartments 3, 4, nozzles 5, 6, 7 of the separation of the separated fractions and a water supply system 8. In section 9 of the hydrocyclonic fractionation of the lower classification chamber 10, inlets 11, 12 pulp supply pipes 13, 14 are located on opposite sides 15, 16 and with a displacement in the vertical plane 17. The pulp supply is provided tangentially in one direction 18. Upper classifying chamber 19 sn abzhena replaceable nozzle 20 mounted on the pipe 6 for sludge removal, and the guide sludge separation 21, installed at an angle of 22 to the pipe 5 sludge separation. Section hydrocyclonic fractionation 9 is equipped with a conical reflector-guide 23. The bottom 24 of the accumulation compartment 4 of the heavy fraction is installed at an angle of 25 to the pipe 7 of the removal of the heavy fraction. The walls 26 of the accumulation compartment 4 of the heavy fraction in the upper part 27 are made with a reverse inclination 28 and are coupled to a conical reflector-guide 23. The nozzles 5 and 7 are equipped with shutters 29, 30.

The hydrocyclonic three-product classifier works as follows.

In the section 9 of the hydrocyclonic fractionation of the lower classification chamber 10 under pressure, tangentially in one direction 18 through the inlet holes 11, 12 of the pulp supply pipes 13, 14 located on opposite sides 15, 16 and with an offset in the vertical plane 17, the pulp is fed. In the storage compartment 4 of the sand fraction through the water supply system 8, a diluting (compensating) water is also supplied under pressure. Section 9 creates a spiral stream of liquefied pulp, expanding upward, in which disintegration and separation of sands by hydraulic size into fractions occurs: heavy, silty and sludge. Particles with high hydraulic fineness, including heavy concentrate, are discarded to the walls of the cone and, losing peripheral speed, gradually descend to the bottom 24 of the accumulation compartment 4 of the sand fraction, which is installed at an angle of 25 to the branch pipe 7 of the heavy fraction. The conical reflector guide 23 slows down the displacement of heavy particles, delaying them for additional disintegration. Moving to the storage compartment 4, heavy particles again fall into the upward flow of water supplied through the water supply system 8, and are additionally disintegrated and separated. The implementation of the walls 26, paired with a conical reflector-guide 23, in the upper part 27 of the accumulation compartment 4 with a reverse inclination 28 provides an acceleration of the flow of water supplied from below under pressure. In addition, the narrowing of the upper part 27 forms a cavitation region, providing an enhanced effect of disintegration. Lighter particles rise upward, moving from section 9 of the classification chamber 1 together with other particles separated in the process of separation in section 9, into the classification chamber 2. The heavy fraction settles on the bottom 24 of the accumulation compartment 4, installed at an angle of 25, and is discharged through the pipe 7. Tilt 25 provides active displacement of heavy particles to the nozzle 7. Thin particles of low density rise in the middle of the pulp column to the area of the replaceable nozzle 20 of nozzle 6 for sludge in the storage compartment 3 of the upper valve sifitsiruyuschey chamber 19. The medium density particles fall on shlamootdeleniya guide 21 mounted at an angle of 22 to the nozzle 5 shlamootdeleniya, and displayed on regrinding. The valves 29, 30 provide regulation of the output of the separated fractions.

The tendency to decrease and instability of the content of a valuable component, the high clay content and the increased content of fine and fine gold at placers, environmental pollution and the increasing demands for increasing the completeness of extraction from mineral resources require the use of advanced methods, technologies and systems for developing a new higher level. The hydrocyclonic three-product classifier will increase the efficiency of separation, classification and disintegration of high clay sand of placers with small and fine particles of gold and will provide a high degree of extraction of valuable components.

Information sources

1. Patent No. 2281808. Hydraulic classifier.

2. Patent No. 2330724. Step classifier-concentrator.

3. Patent No. 2135291. Three-product hydraulic classifier.

Claims (1)

Three-hydrocyclonic classifier, containing classification chambers installed one above the other, equipped with accumulation compartments, branch pipes for separation of the separated fractions, and a water supply system, characterized in that in the section of the hydrocyclonic fractionation of the lower classification chamber, the inlet openings of the pulp supply pipes are located on opposite sides and with an offset in the vertical plane, while the pulp supply is provided tangentially in one direction, and the upper classifying chamber the ra is equipped with a replaceable nozzle mounted on the sludge outlet pipe and a sludge separation guide installed at an angle to the sludge separation pipe, while the hydrocyclonic fractionation section is equipped with a conical reflector-guide, and the walls of the heavy fraction storage compartment in the upper part are made with a reverse inclination and are conjugated with a conical reflector-guide, while the bottom of the compartment accumulation of the heavy fraction is installed at an angle to the branch pipe of the removal of the heavy fraction.

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